/**
 *    Copyright (C) 2024-present MongoDB, Inc.
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the Server Side Public License, version 1,
 *    as published by MongoDB, Inc.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    Server Side Public License for more details.
 *
 *    You should have received a copy of the Server Side Public License
 *    along with this program. If not, see
 *    <http://www.mongodb.com/licensing/server-side-public-license>.
 *
 *    As a special exception, the copyright holders give permission to link the
 *    code of portions of this program with the OpenSSL library under certain
 *    conditions as described in each individual source file and distribute
 *    linked combinations including the program with the OpenSSL library. You
 *    must comply with the Server Side Public License in all respects for
 *    all of the code used other than as permitted herein. If you modify file(s)
 *    with this exception, you may extend this exception to your version of the
 *    file(s), but you are not obligated to do so. If you do not wish to do so,
 *    delete this exception statement from your version. If you delete this
 *    exception statement from all source files in the program, then also delete
 *    it in the license file.
 */

#include "mongo/db/storage/ident.h"

namespace mongo {

namespace {
static constexpr auto _kInternalIdentPrefix = "internal-"_sd;
static constexpr auto _kResumableIndexBuildIdentStem = "resumable-index-build-"_sd;
}  // namespace

namespace ident {
bool isUserDataIdent(StringData ident) {
    // Indexes and collections are candidates for dropping when the storage engine's metadata
    // does not align with the catalog metadata.
    return ident.find("index-") != std::string::npos || ident.find("index/") != std::string::npos ||
        isCollectionIdent(ident);
}

bool isInternalIdent(StringData ident) {
    return ident.find(_kInternalIdentPrefix) != std::string::npos;
}

bool isResumableIndexBuildIdent(StringData ident) {
    invariant(isInternalIdent(ident), ident.toString());
    return ident.find(_kResumableIndexBuildIdentStem) != std::string::npos;
}

bool isCollectionIdent(StringData ident) {
    // Internal idents prefixed "internal-" should not be considered collections, because
    // they are not eligible for orphan recovery through repair.
    return ident.find("collection-") != std::string::npos ||
        ident.find("collection/") != std::string::npos;
}

StringData getInternalIdentPrefix() {
    return _kInternalIdentPrefix;
}

StringData getResumableIndexBuildIdentStem() {
    return _kResumableIndexBuildIdentStem;
}
}  // namespace ident
}  // namespace mongo
